834 



INDEX 



Saliva, 34* 



Salivary glands, 34* 



Salivary receptacle, 624 



Salmacina, 486 



Salpingoeca, 77 



Saltatoria, 636 



Sand-hopper — See Orchestia, 568 



Saprophytic, 69*, 72 



Sarcocystidea, 81*, 88 



Sarcocystis, 88 



Sarcolemma, 28* 



Sarcophaga, 644 



Sarcoptes scabicci, 665 



Sarsia, 145 



Scale-insects, 634, 647 



Scallop, 696 



Scaphoda, 756", 757 



Scaphopoda, 680, 756*, 757 



Schist osomum haematobium, 285 



Schistosomum japonicum, 285 



Schizogony, 84*, 85, 86 



Schizopathes, 202 



Schizopod-stage, 599 



Schizopoda, 601 



Scirtopoda, 328*, 330 



Sclerite, 562* 



Scleroblast, 110*, 120, 124 



Sclerotic, 771 



Scolex, 246*, 280 



Scolopendra, 615 



Scolopcndrella, 615, 617 



Scorpion — See Buthus. 



Scorpions, 526, 653 



Scorpionida, 660*, 673, 676, 677 



Scorpion-spiders, 632 



Scrobicularia piperata, 699 



Scuta, 578 



Scutariella, 259 



Scutigera, 615, 617 



Scutigerella, 615 



Scyllarus, 587, 589 



Scyllis ramosa, 487 



Scyphistoma — See Scyphula 



Scyphozoa, 128 : Example, 168 : Struc- 

 ture and classification, 176 : System- 

 atic position of example, 177: Ad- 

 ditional remarks on, 184 



Scyphula, 174*, 175, 229 



Sea-anemones, 128, 185, 194, 196, 200— 

 See Tealia 



Sea-blubbers, 182 



Sea-cucumber, External features, 401 : 

 Structure of body-wall, 402: Ambu- 

 lacral system, 402 : Nervous- vascular 

 systems, 402 : Ccelome, 403 : Enteric 

 canal, 403, 404 : Reproductive organs, 

 404 : Development, 404 : Systematic 

 position, 414 



Sea-cucumbers, 412 — See Holothuroidea 



Sea-fans, 195 



Sea-firs (Sertularians), 143 



Sea-hares, 721 



Sea-mats, 340 — See Polyzoa 



Sea-mice, 475 



Sea-mussel, 695 



Sea-pens, 196 



Sea-urchin, External features, 393, 394, 

 395 : Corona, 396 : Aristotle's lantern, 

 397 : Nervous system, 398 : Ambu- 

 lacral system, 399 : Enteric canal, 399, 

 400 : Coelome, 399 : Blood-vascular 

 system, 400 : Reproductive organs, 

 400 : Development, 400 : Systematic 

 position, 414 



Sea-urchins, 412* — See Echinoidea 



Secondary axis, 41*, 42 



Secretion, 25* 



Segment, 43* 



Segmental organ — See Nepredium 



Segmentation of oosperm, 22" 



Segmentation-cavity — See Blastoc* ele 



Segmentation-nucleus, 20* 



Seison, 335 



Seisonida, 329 



Sehnaria, 347 



Selenariidw, 349, 352 



Self-mutilation, 435 



Semostomae, 177*, 182, 227 



Sense-organs, 39* : Obelia, 135 : Trachy- 

 lime, 154: Aurelia, 172: Cubomedusre, 

 182 : Hormiphora, 216 : Ctenoplana, 

 225 : Platyhelminthes, 268 : Nemer- 

 tinea, 294 : Chsetognatha, 318 : Bra- 

 chiomis, 326 : Rotifera, 334': Phoronis, 

 357 : Starfish, 377 : Sea-urchin, 395 : 

 Nereis, 447 : Chretopoda, 438 : Sipun- 

 culus, 454 • Hirudo, 514 : Hirudinea, 

 520 : Apus, 536 : Astacus, 556 : Crus- 

 tacea, 597 : Peripatus, 609 : Peri- 

 planeta, 627 : Insects, 644, 645 : 

 Scorpio, 658 : Arachnida, 670 : Mussel, 

 691 : Pelecypoda, 707 : Amphineura, 

 715 : Triton. 731 : Gastropoda, 746 : 

 Rhodope, 758 : Sepia, 769, 771 : 

 Nautilus, 787 : Cephalopoda, 797— See 

 also Eyes, Auditory organs, Olfactory 

 organs, Gustatory organs, Tactile or- 

 gans, Osphradia 



Sense papilla;, 302, 493 



Sepia cultrata, 759 



Sepia, External features, 759, 760 : 

 Shell, 761, 762: Chromatophores, 762 = 

 Mantle-cavity, 762: Internal skeleton, 

 763: Alimentary system, 763: Ink-sac, 



765 : Vascular system, 765 ; Ccelome, 



766 : Ctenidia, 766, 767 : Nervous 

 system, 767 : Sensory organs, 769, 771: 

 Excretory organs, 772, 773 : Repro- 

 ductive organs, 773, 775 : Systematic 

 position, 790 



Sepiido3, 790* 

 Septal funnel, 173* 

 Septal neck, 776* 

 Septibranchia, 696*, 697, 698 



